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    <title>Document</title>
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<script>

// var num = 0;

// for(var i = 0;i<=100;i++){
//     num += i;
// }
// console.log(num)
    // 求1到100的里面的偶数跟奇数总和

    var num = 0;
    // for(var i =0 ;i<=100;i++){
    //     var count = i;
    //     if(count % 2 ===0){
    //         num += count;
    //     }
    // }
    for(var i =0 ;i<=100;i++){
        var count = i;
        if(count % 2 !==0){
            num += count;
        }
    }
    console.log(num);

</script>
</html>